re PR fortran/91587 (ICE in gfc_resolve_filepos, at fortran/io.c:2913)

2019-08-30  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/91587
	* io.c (match_filepos): MATCH_ERROR should branch to a syntax error.

2019-08-30  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/91587
	* gfortran.dg/pr91587.f90: New test.

From-SVN: r275236

gcc/fortran/ChangeLog

+2019-08-30  Steven G. Kargl  <kargl@gcc.gnu.org>
+
+	PR fortran/91587
+	* io.c (match_filepos): MATCH_ERROR should branch to a syntax error.
+
 2019-08-28  Steven G. Kargl  <kargl@gcc.gnu.org>
 
 	PR fortran/91551

gcc/fortran/io.c

@@ -2845,7 +2845,7 @@ match_filepos (gfc_statement st, gfc_exec_op op)
 
   m = match_file_element (fp);
   if (m == MATCH_ERROR)
-    goto done;
+    goto syntax;
   if (m == MATCH_NO)
     {
       m = gfc_match_expr (&fp->unit);

gcc/testsuite/ChangeLog

+2019-08-30  Steven G. Kargl  <kargl@gcc.gnu.org>
+
+	PR fortran/91587
+	* gfortran.dg/pr91587.f90: New test.
+
 2019-08-30  Martin Sebor  <msebor@redhat.com>
 
 	PR middle-end/91599

gcc/testsuite/gfortran.dg/pr91587.f90

+! { dg-do compile }
+! PR fortran/91587
+! Code contributed by Gerhard Steinmetz
+program p
+   backspace(err=!)  ! { dg-error "Syntax error in" }
+   flush(err=!)      ! { dg-error "Syntax error in" }
+   rewind(err=!)     ! { dg-error "Syntax error in" }
+end
+
+subroutine bar       ! An other matcher runs, and gives a different error.
+   endfile(err=!)    ! { dg-error "Expecting END" }
+end